TIA-942-C Data Center Standard Brings a Host of Changes and Updates

Overview

The article is a trade-press summary of a TIA webinar by contributors to ANSI/TIA-942-C and reports the standard as published in May 2024. Revision C folds the edge data centre amendment to 942-B into the main text. The source is a second-hand summary, and the standard's full text was not read. The most visible novelty is a classification for micro edge data centres (µEDC) in prefabricated, remotely monitored enclosures.

Type A is part of a network of µEDCs that can take over for each other; Type B is self-reliant, for example in retail. The distinction settles whether resilience is provided inside the site or at network level through workload failover. The revision also updates cabling requirements, floor loading and minimum cabinet width; a minimum of 2 fibres is recommended for horizontal and backbone cabling, and broadband coax is recognised.

The rating tables in Annex D become normative, with 'Required/Not Required' replacing Yes/No, and the UPS, battery, fire-protection and seismic rows are simplified. The article's limit is that it summarises a webinar rather than comparing full texts; numeric thresholds such as the floor-load value are not given and must be checked in the standard. The engineering consequence of the Type A/Type B split is that in Type A, peer nodes take over each other's load, so full redundancy inside a single enclosure may not be needed; in Type B the enclosure must stand alone, which pulls UPS, battery and cooling decisions inside it.

Key points

1. ANSI/TIA-942-C published May 2024
2. Micro edge data centre classes: Type A (networked, failover to peers) and Type B (self-contained resilience)
3. Annex D rating tables now normative; 'Required/Not Required' replaces Yes/No
4. Minimum 2 fibres recommended for horizontal/backbone cabling; broadband coax recognised
5. New requirements on floor-loading capacity and minimum cabinet width
6. Revision folds in the edge data centre amendment to 942-B

Using it in design

• Add an 'edge / micro-edge' project type with a Type A/Type B resilience choice; Type A can justify lower site redundancy because workload fails over
• Carry cabinet width and floor-load parameters in the rack catalogue so TIA-942-C checks can run
• Default horizontal and backbone cabling templates to at least 2 fibres

Who should read it

Engineers designing edge and micro-edge data centres, and cabling consultants assessing the move from 942-B to 942-C.

Related standards

• ANSI/TIA-942-C

Publication details

Authors

Patrick McLaughlin

Publisher

Cabling Installation & Maintenance

Year

2024

Document language

English

Source type

Expert / community

Access

Free to read

Licence

Copyright retained; citation only — the publisher’s terms apply to the original document

Citation